Binder sprayer



July 28, 1931;

R. .E. WILLARD BINDER SPRAYER 7 Filed April 28, 1950 2 Sheets-Sheet l R; E. WILLARD BINDER SPRAYER July 28, 1931.

2 Sheets-Sheet 2 Filed April 28, 1930 Patented July 28-, 1931 TATES 3mm a; 'wiLLARD, or MIN EAPoLIs, MINNESOTA. assreu a, .BY MESNE sssleu rmrs g nron arron 0F DELA 3 Application filed April 28,

I My presentinvention relates chiefly to an improved mixer for intimately commingling finely ground or pulverized solid materials with 'liquid'substances and directed particularly to the provision ofan apparatus or device for eifectually commingling pulverized scribed and defined the claims.

The briquette-forming material which may be finely ground or pulverized anthracite .or

bituminous coal or lignite should come from the customary orany suitable drier at a quite high'temperature, say 400 F., having preferab'ly a'rnoist'ure content of: approximately two per ce t. Suchbriquetting material is fed jto my improved mixer where it is commingled with'a liquid binder of asphalt or asphalt compound and at the same time is subjected to the direct action of superheated steam and to the indirect action of a steam jacket.

" A commercial form of the improved binder ls'prayer illustrated in .the'accompanying drawings wher-ein like characters indicate like partsthroughout the several views.

j Referringto the drawings q I 1 is anejlev'ation showing the improved binder s rayer;

Fig.2 is avertical se ction taken on the line taken respectively on the lines 3-3, 4+4,

The device comprises an. upright container 1 preferably of cylindrical {OI-I11,- the cylinder "being made up of two semi-cylindrical sections8 and 9 connected at one side by hinges IO -and normally {held together at their opposite sides'jby a suitable clamp 11. The-shell F section 8 at its lower end is fixed to the flanged anchoring ring 12 which, in turn is attached to the topplate 1'3 of a'receiving device such as a fluxer, the'latter having a large opening 14 aligned With the bottom of the cylindrical sheil. -=;A circular head. 15 is secured to the 'PAT oFFicr-q amnessnares 1930. Serial no; 441,925.

,gTQB IQUET ENGINEE N C MBA Y, QQE MIN E L S ME HE QTA A upper end of the fixed shell section Bigid- I I ly secured to the lower endof the fixed shell sectlon 8 and extending approximately diametrlcally across the shell is a brid e bar 16 provided at its center with a hub 1 that is aligned with a. hub 18 on the head 15.

Located within a two-part cylindrical shell or container are conical bafiles of which, as shown there are three. The upper conical bafile 19, the intermediate conical baflie 20, and the lower conical baflle 21 are each made up of hollow approximately semi-circular sections that are rigidly secured to the tespective shell sections 8 and 9 so that they come together as bestshovvn in Fig. 6, when the shell section 9 is closed against the shell section 8. By reference particularly to Figs. 2 and 6, it will be noted that the semiecircular ba-files are formed withsteam chambers 22 that are tapped by steam supply pipes 23 'and drain pipes 24. The pipes 23 may be coupled upto a source of steam supply by any suitable means although the connections to the nipples on the movable she'll section should include flexible or jointed hose or pipe sections.

Extended axially through the shell is an upright hollow shaft 25. This shaft is journaled in the axially aligned hubs 17 and 18 and at its upper end, as shown, is povided. with a pulley '26 whereby it may be rotated at quite high speed. Secured to the shaft 25, just below the upper bafle '19, is an impellerhead 27 that projects outward under "the contracted portion of the upper ba-file 19; and secured to said shaft below the baffles project outward, respectively, under the said conical afi es 2 nd 21- 'l e pp r V pellerheadfl? is forme t periphera 20 and'21 are impeller heads 28 and '29 that notches 27 and the'lovver impeller heads 28 f and-r29 are formed with notches, or grooves 28 and 29*, respectively. ,The purposeof these notches is to give the rotating impeller heads a better gripon material delivered thereto, as will presently be noted and in effect, the said heads are fluted impeller heads. The impeller head 27 is for-med with radial binder-delivery ducts 0 that extend from the interior oi the hollow shaiit 25 into the pockets 27; and just below these ducts the shaft 25 is provided with a plug 25.

The binder material will be delivered into the upper end of the hollow shaft 25 and under the action of gravity, due to head of the supply, and to centrifugal force, will be discharged through the ducts 30. For the introduction of the pulverized coal or briquette-forming material into the container, the shell section 8, near its upper end is provided with a large inlet passage 31 best shown in Fig. 2. Directly below the inlet opening 31 are several, as shown two, steam jets 32, that are directed obliquely downward and in the direction of the rotation of the shaft 25 and its impeller heads. These steam jets will preferably be connected to a source of super-heated steam.

The pulverized coal or briquette material will be delivered intothe upper portion of the shell or casing at quite'high temperature preferably at a temperature already stated of about 400 degrees IT. The binder which will usually be asphalt or asphalt compound will be delivered into the upper end of the shaft 25 at a temperature of say approximately 17 5 degrees F. The pulverized briquette material entering the casing through the opening 31 will be immediately subjected to the super-heated steam blasts from the jets 32 and by the jet action alone will be given a whirling motion against the upper bafiie 19 and from the balfie will be delivered onto the impeller head 27 and this head, rotating at high speed, will throw the briquette material radially outward in' a spray or loose condition against the oblique under surface of the upper baffle; and at the same time the fluid binder will be thrown in a fine spray into the shower or spray of briquette material and will cause a very thorough commingling of the binder with the coal or briquette material. The coal or briquette material supplied with the proper amount of binder and quite thoroughly commingled by the action just described will, by the intermediate baffle 20, be poured downward into the intermediate impeller head 28 and by the latter again thrown outward against the oblique under surface of the bafile 20 and from thence by the baflie 21, the briquette material will be delivered to the lower impeller head 29. Thus the binder is supplied to the briquette material and very thoroughly and evenly commingled therewith.

This binder sprayer will be found eflicient for many purposes but has been especially designed for use as part of a briquetteforming apparatus used for carrying out an improved process of forming briquettes disclosed and claimed in the companion appli cation filed of even date herewith under Serial Number 447,926.

The steam jets 32 in the arrangement described, perform two functions, to wit: they set up a whirling motion of the briquette material as it enters the sprayer and they maintain or keep up the temperature thereof or even increase the temperature thereof so that the coal or briquette particles will be not only very thoroughly commingled with the binder but will quickly absorb the same. In some instances, hot air instead of steam might be supplied to the jets 32. The-briquette materialis further kept in hot condition while passing through the binder sprayer by the steam heated walls of the baffles against which the material is repeatedly projected.

The main purpose of making the casing of the sprayer in two sections is to permit the same to be opened up to clean out or repair the interior of the same and hence it will be understood that this, as well ascertain other features, while important, may in some instances be omitted without departing. from the spirit of the invention herein disclosed and claimed.

\Vhat I claim is:

1. A sprayer of the'kind described comprising an upright casing provided within with a conical bafile having beveled upper and lower surfaces, a rotary shaft extending axially through said casing and provided with an impeller head located below the upper inclined portion of said baffle and arrangedto throw the briquette material against the inclined under surface of said baffle, and means for the delivery of steam or hot air into the upper portion of said casing in a direction to cause the briquette material to take up a whirling motion above and against said baflle.

and lower surfaces, a rotary shaft extending axially through said casing and provided with an impeller head located below the up.-

per inclined portion of said bafl le and arranged to throw the briquette material against the inclined under surface of said baffle, said shaft and head having binderdelivery passages arranged to project the spray of binding material into the briquette material thrown from said impeller head, and means for the delivery of steam or hot air into the upper portion of said casing in a direction to cause the briquette material to take up a whirling motion above and against said baifie.

3. A sprayer of the kind described comprising an upright casing provided within with a conical bafile having beveled upper and lower surfaces, and a rotary shaft extending axially through said casing and provided with an impeller head located below the upper inclined portion of said baffle and arranged to throw the briquette material 2. A sprayer of the kind "described comagainst the inclined under surface of said baffle, said baffle being hollow and combined with means for supplying steam thereto.

l. A sprayer of the kind described comprising an upright casing provided within with a conical baflie having beveled upper and lower surfaces, and a rotary shaft extending axially through said casing and provided with an impeller head located below the upper inclined portion of said baffle and arranged to throw the briquette .material against the inclined under surface of said baflle, said shell andsaid baflie being made up of separable sections permitting the apparatus to be opened up for inspection,

cleaning or repalr. v 5. A sprayer of the kind described comprising an upright drum-like casing provided within with baflies located one above the other, a hollow shaft axially journaled in said casing and provided with upper and lower impeller heads located below and adapted to receive briquette material from the respective bafiies, said upper impeller head having out-leading binder-delivery ducts receiving the binder material from the interior of said shaft and arranged to pro ject a spray of binder material into the briquette material delivered from said upper 7 head.

6. The structure defined in claim 5 in which said casing is made up of two sections hingedly connected and to said baflles are made up of sections secured to the respective I case sections.

7. The structure defined in claim 5 in further combination with steam jets opening into said casing above the upper baflie and arranged to set up a whirling motion of the briquette material delivered into said casing.-

In testimony whereof I aflix my signature.

ROBERT E. WILLARD. 

